Tonight at 8 p.m. ET, watch President Obama live on the White House YouTube channel as he addresses the nation about the Gulf oil spill. Then 15 minutes later, White House Press Secretary Robert Gibbs will answer your questions. Starting now, you can submit your questions about the disaster using Google Moderator and vote the best ones to the top. Hear more from Mr. Gibbs:

Already, the conversation about the oil spill on the web has been lively. Earlier this month, thousands of you submitted your ideas on YouTube about how to clean up the oil spill, several of which were aired during the PBS NewsHour. And as more Americans search Google to find information about the oil spill and cleanup efforts, we want to help you connect directly with the recovery process.

Now’s your chance to hear the White House’s response to your questions about what many are calling the worst man-made environmental disaster in U.S. history.